Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6897c471f93e8b1…

MALICIOUS

PDF

76.6 KB Created: 2021-07-14 08:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 48d4a8dfcd718bfd791675f2b1562ce0 SHA-1: 348dde9237a380743906dd905445e11bf7f2506f SHA-256: e6897c471f93e8b1353b7dbf1790a372a9b112e27fe3d39c2b630f7ca551bfeb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded URLs that point to external resources, suggesting a redirection or phishing attack. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to facilitate malicious actions like downloading further payloads or redirecting users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8972

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://feedproxy.google.com/~r/razvivatel/yapz/~3/gOBB6uaVNRA/square?utm_term=reading+and+writing+targets+2+pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e88204ce205b5713a73642/1625850372831/88197141544.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7a9519a16f038d61680d/1626110613306/68992694368.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee3ef507d0587a376334bf/1626226421170/understanding_perspective_and_point_of_view_worksheet.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec93339cb57f380a78ecd9/1626116915744/51825198374.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e87229afb4337c48347ff7/1625846313283/zosisuvokivubij.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8c8f9cb57f380a782ecc/1626115216058/there_is_more_in_heaven_and_earth_than_is_dreamt_of_in_your_philosophy.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb48.bin
8d532f41459143fa6cad9f1acbf2df47b366dea9c27d2868bc72a0b5438a30ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB48 16364 bytes
font_01_sfnt_off0000f58d.bin
405f0cd9de62694c7bb86e35e393a52c2470f72bf76d30e4bdef95efb236b6f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF58D 10760 bytes
font_02_sfnt_off00010e51.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E51 16792 bytes

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